I Take Rapaflo For BPH. I Find It Makes Me

I take Rapaflo for BPH. I find it makes me sleepy, possibly constipates me. after being on it for the past 6yrs I decided to take a break from it that ended up being 8 days long. during that time the above symptoms went away even though my urine stream became very weak. I'm wondering if all the other alpha blockers have the sme basis side affects.